Genomics reveals broad hybridization in deeply divergent Palearctic grass and water snakes (Natrix spp.).

Autor: Schöneberg Y; Senckenberg Biodiversity and Climate Research Centre (BiK-F), Senckenberganlage 25, 60325 Frankfurt am Main, Germany; Institute for Ecology, Evolution and Diversity, Goethe University, Max-von-Laue-Straße 9, 60325 Frankfurt am Main, Germany., Winter S; Senckenberg Biodiversity and Climate Research Centre (BiK-F), Senckenberganlage 25, 60325 Frankfurt am Main, Germany; Research Institute of Wildlife Ecology, University of Veterinary Medicine Vienna, Savoyenstraße 1, 1160 Vienna, Austria., Arribas O; IES Castilla, Junta de Castilla, Castilla y León, 42003 Soria, Spain., Di Nicola MR; IRCCS San Raffaele Hospital, Unit of Dermatology, Via Olgettina 60, 20132 Milan, Italy., Master M; Molecular Ecology and Evolution at Bangor (MEEB), School of Natural Sciences, Bangor University, Environment Centre Wales, Bangor LL57 2UW, Wales, UK., Owens JB; Molecular Ecology and Evolution at Bangor (MEEB), School of Natural Sciences, Bangor University, Environment Centre Wales, Bangor LL57 2UW, Wales, UK., Rovatsos M; Department of Ecology, Faculty of Science, Charles University, Viničná 7, 12844 Praha 2, Czech Republic., Wüster W; Molecular Ecology and Evolution at Bangor (MEEB), School of Natural Sciences, Bangor University, Environment Centre Wales, Bangor LL57 2UW, Wales, UK., Janke A; Senckenberg Biodiversity and Climate Research Centre (BiK-F), Senckenberganlage 25, 60325 Frankfurt am Main, Germany; Institute for Ecology, Evolution and Diversity, Goethe University, Max-von-Laue-Straße 9, 60325 Frankfurt am Main, Germany; LOEWE-Centre for Translational Biodiversity Genomics (TBG), Senckenberg Nature Research Society, Senckenberganlage 25, 60325 Frankfurt am Main, Germany., Fritz U; Senckenberg Dresden, Museum of Zoology, A. B. Meyer Building, 01109 Dresden, Germany. Electronic address: uwe.fritz@senckenberg.de.
Jazyk: angličtina
Zdroj: Molecular phylogenetics and evolution [Mol Phylogenet Evol] 2023 Jul; Vol. 184, pp. 107787. Date of Electronic Publication: 2023 Apr 18.
DOI: 10.1016/j.ympev.2023.107787
Abstrakt: Understanding speciation is one of the cornerstones of biological diversity research. Currently, speciation is often understood as a continuous process of divergence that continues until genetic or other incompatibilities minimize or prevent interbreeding. The Palearctic snake genus Natrix is an ideal group to study speciation, as it comprises taxa representing distinct stages of the speciation process, ranging from widely interbreeding parapatric taxa through parapatric species with very limited gene flow in narrow hybrid zones to widely sympatric species. To understand the evolution of reproductive isolation through time, we have sequenced the genomes of all five species within this genus and two additional subspecies. We used both long-read and short-read methods to sequence and de-novo-assemble two high-quality genomes (Natrix h. helvetica, Natrix n. natrix) to their 1.7 Gb length with a contig N50 of 4.6 Mbp and 1.5 Mbp, respectively, and used these as references to assemble the remaining short-read-based genomes. Our phylogenomic analyses yielded a well-supported dated phylogeny and evidence for a surprisingly complex history of interspecific gene flow, including between widely sympatric species. Furthermore, evidence for gene flow was also found for currently allopatric species pairs. Genetic exchange among these well-defined, distinct, and several million-year-old reptile species emphasizes that speciation and maintenance of species distinctness can occur despite continued genetic exchange.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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